First up, the iOS Simulator is not an emulator. If you think of it that way, you will fall into all sorts of logical traps. For example, an emulator would be capable of hosting NetworkExtension providers, but the simulator can’t because it uses the Mac’s networking stack.
One other thing that the simulator uses from the host Mac is the current time setting, so this distinction could be relevant to your problem.
Apropos that problem, it’s hard to offer any advice without knowing how you’re generating your calendar. iOS has a wealth of calendrical APIs, and using them to render a calendar is tricky, especially if you want to handle all the edge cases. Can you explain the approach that you took?
Share and Enjoy
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"